NMRWish Built-In TCL Functions
sysOpen: Open a binary data file or pipeline command for reading or writing. See also: sysRead, sysWrite, sysClose.

sysOpen fileName openMode
sysOpen !pipeCommandName pipeMode
Values for openMode (use one or more):
r READ: Open for reading.
w WRITE: Write, Create if needed.
a APPEND: Starting at end of existing data.
t TRUNC: Delete existing data.
Values for pipeMode: (Use only one):
r Read from Pipe.
w Write to pipe.

Frank Delaglio, Ph.D.